Apparatus for determining a number of successive equal bits preceding an edge within a bit stream and apparatus for reconstructing a repetitive bit sequence

US9164726B2 · kind B2 · utility

Assignee

• ADVANTEST CORPORATION · JP

Inventors

• Jochen Rivoir · Magstadt, DE
• Markus Seuring · Stuttgart, DE

Key dates

• Filing date: May 10, 2010
• Grant date: Oct 20, 2015
• Expiry date: Jun 27, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F7/38
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

An apparatus for determining a number of successive equal bits preceding an edge within a bit stream including a repetitive bit sequence includes an edge number determiner, an edge selector, a time stamper and an equal bits determiner. The edge number determiner determines a preset number of edges. The preset number of edges is coprime to a number of edges of the repetitive bit sequence or coprime to a maximal number of edges of the repetitive bit sequence. The edge selector selects edges of the bit stream spaced apart from each other by the preset number of edges. Further, the time stamper determines a time stamp for each selected edge of the bit stream and the equal bits determiner determines the number of successive equal bits preceding the edge based on determined time stamps of selected edges.